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From: Pierre Ossman <drzeus-mmc@drzeus.cx>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>,
	Zdenek Kabelac <zdenek.kabelac@gmail.com>,
	Kernel development list <linux-kernel@vger.kernel.org>
Subject: Re: [Bug 10030] Suspend doesn't work when SD card is inserted
Date: Wed, 20 Feb 2008 21:51:27 +0100	[thread overview]
Message-ID: <20080220215127.58b8ec70@mjolnir.drzeus.cx> (raw)
In-Reply-To: <Pine.LNX.4.44L0.0802201418520.7056-100000@iolanthe.rowland.org>

On Wed, 20 Feb 2008 14:26:16 -0500 (EST)
Alan Stern <stern@rowland.harvard.edu> wrote:

> 
> Do I understand this correctly?  You've got special handling for the 
> case where a bus handler doesn't have a resume routine, but no special 
> handling for the case where it doesn't have a suspend routine?

Hmm... There should be checks for both, but the code seems to suggest otherwise.

> Why bother to remove the device if neither routine exists (there won't be 
> any need to revive it since the bus never got suspended)?

The bus always gets suspended. The checks are to determine if state is saved or not. If it isn't, then a suspend/resume is treated as a removal/insertion.

> And why not simply fail the suspend if the resume routine doesn't exist
> and the suspend routine does?  Maybe with an error message in the
> system log.

For the asymmetric case, I guess that would do. But I still want to remove devices when the bus handler has no suspend handling.

Rgds
-- 
     -- Pierre Ossman

  Linux kernel, MMC maintainer        http://www.kernel.org
  PulseAudio, core developer          http://pulseaudio.org
  rdesktop, core developer          http://www.rdesktop.org

  reply	other threads:[~2008-02-20 20:51 UTC|newest]

Thread overview: 92+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20080219232338.E9A24108068@picon.linux-foundation.org>
2008-02-20 16:42 ` [Bug 10030] Suspend doesn't work when SD card is inserted Alan Stern
2008-02-20 17:30   ` Pierre Ossman
2008-02-20 19:26     ` Alan Stern
2008-02-20 20:51       ` Pierre Ossman [this message]
2008-02-20 20:58         ` Rafael J. Wysocki
2008-02-20 21:06         ` Alan Stern
2008-02-20 22:15           ` Rafael J. Wysocki
2008-02-20 22:24             ` Alan Stern
2008-02-20 22:41               ` Rafael J. Wysocki
2008-02-21  0:02               ` Rafael J. Wysocki
2008-02-21 16:27                 ` Alan Stern
2008-02-21 16:38                   ` Rafael J. Wysocki
2008-02-21 17:48                     ` Alan Stern
2008-02-21 22:47                       ` Rafael J. Wysocki
2008-02-21 23:05                         ` Alan Stern
2008-02-23  1:30                           ` Rafael J. Wysocki
2008-02-23  4:39                             ` Alan Stern
2008-02-23 20:16                               ` Rafael J. Wysocki
2008-02-23 23:29                                 ` Alan Stern
2008-02-24  0:19                                   ` Rafael J. Wysocki
2008-02-24  3:25                                     ` Alan Stern
2008-02-24  4:26                                       ` [linux-pm] " Alan Stern
2008-02-24 14:00                                         ` Rafael J. Wysocki
2008-02-24 15:33                                           ` Bugs in MMC [was: [Bug 10030] Suspend doesn't work when SD card is inserted] Alan Stern
2008-02-25 17:41                                             ` Pierre Ossman
2008-02-25 17:58                                               ` Alan Stern
2008-02-25 18:31                                                 ` Pierre Ossman
2008-02-25 20:00                                                   ` Alan Stern
2008-03-01 14:11                                                     ` Pierre Ossman
2008-03-01 14:36                                                       ` Alan Stern
2008-03-01 14:47                                                         ` Pierre Ossman
2008-02-25 22:51                                               ` Felipe Balbi
2008-03-03 21:59                                               ` David Brownell
2008-03-04  6:03                                                 ` Pierre Ossman
2008-03-04  9:44                                                   ` David Brownell
2008-03-04  9:58                                                     ` Pierre Ossman
2008-03-06 21:23                                                       ` David Brownell
2008-03-04 17:53                                                     ` Alan Stern
2008-03-04 18:53                                                       ` David Brownell
2008-03-04 19:51                                                         ` Alan Stern
2008-03-04 20:30                                                           ` David Brownell
2008-03-04 21:00                                                             ` Alan Stern
2008-03-06 15:55                                                               ` Pavel Machek
2008-03-06 20:33                                                                 ` Alan Stern
2008-03-06 20:53                                                                   ` Zdenek Kabelac
2008-03-06 21:31                                                                     ` Rafael J. Wysocki
2008-03-04 17:50                                                 ` Alan Stern
2008-02-24 13:33                                       ` [Bug 10030] Suspend doesn't work when SD card is inserted Rafael J. Wysocki
2008-02-24 20:25                                         ` Rafael J. Wysocki
2008-02-24 20:45                                           ` Alan Stern
2008-02-24 20:56                                             ` Rafael J. Wysocki
2008-02-24 21:11                                               ` Alan Stern
2008-02-24 22:18                                                 ` Rafael J. Wysocki
2008-02-24 13:51                                       ` Rafael J. Wysocki
2008-02-24 19:27                                         ` Alan Stern
2008-02-24 19:42                                           ` Zdenek Kabelac
2008-02-24 20:09                                             ` Rafael J. Wysocki
2008-02-24 18:21                                       ` Pavel Machek
2008-02-24 19:03                                         ` Alan Stern
2008-02-24 20:11                                           ` Pavel Machek
2008-02-24 20:33                                             ` Alan Stern
2008-02-24 21:42                                               ` Pavel Machek
2008-02-24 22:21                                                 ` Rafael J. Wysocki
2008-02-25  2:21                                                   ` Alan Stern
2008-02-25 11:41                                                     ` Rafael J. Wysocki
     [not found]                                                       ` <c4e36d110802250402q7312a488idf752e07db7504e8@mail.gmail.com>
2008-02-25 12:31                                                         ` Rafael J. Wysocki
2008-02-25  2:19                                                 ` Alan Stern
2008-02-25  9:03                                                   ` using long instead of atomic_t when only set/read is required (was Re: [Bug 10030] Suspend doesn't work when SD card is inserted) Pavel Machek
2008-02-25 14:46                                                     ` Alan Stern
2008-03-03 12:08                                                       ` [patch] Re: using long instead of atomic_t when only set/read is required Pavel Machek
2008-03-03 15:42                                                         ` Alan Stern
2008-03-03 15:53                                                           ` Alan Cox
2008-03-03 17:11                                                             ` Alan Stern
2008-03-03 17:26                                                               ` Linus Torvalds
2008-03-03 17:44                                                                 ` Pavel Machek
2008-03-03 19:27                                                                   ` Alan Stern
2008-03-06 15:58                                                                 ` Mark Lord
2008-03-06 16:11                                                                   ` Linus Torvalds
2008-03-06 16:27                                                                     ` Mark Lord
2008-03-03 17:16                                                             ` Nick Piggin
2008-03-03 17:31                                                               ` Paul E. McKenney
2008-03-03 17:33                                                               ` Alan Cox
2008-03-03 17:22                                                           ` Paul E. McKenney
2008-03-03 15:48                                                         ` Alan Cox
2008-03-03 17:24                                                           ` Pavel Machek
2008-03-03 20:27                                                             ` Rafael J. Wysocki
2008-03-03 21:12                                                               ` Paul E. McKenney
2008-03-03 22:23                                                               ` Linus Torvalds
2008-03-04 23:32                                                             ` Peter Hartley
2008-03-04 23:54                                                               ` Rafael J. Wysocki
2008-03-05  0:26                                                                 ` Paul E. McKenney
2008-02-25 11:40                                                   ` [Bug 10030] Suspend doesn't work when SD card is inserted Rafael J. Wysocki

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